Select two indicators from the list below that would be suitable for Fe2 Tl3 titration represented by the dashed titration curve below. The cell potential vs S. C.E at the equivalence point is approximately 0.88 V. Redox indicator color change range E space equals space open parentheses E to the power of ring operator space plus-or-minus space fraction numerator 0.05916 over denominator n end fraction close parentheses space volts. Keep in mind that this potential versus Standard Hydrogen Electrode. Assume n

The temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)

A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.